The JONPONY big and tall ergonomic office chair is crafted from high-quality fabric, featuring waterproof and easy-to-clean properties as well as excellent durability.  Its S-shaped backrest fits the human body curves, and paired with unique lumbar airbags that can be inflated, it provides strong support for the lumbar and back to alleviate discomfort from prolonged sitting.  The spacious seat is filled with premium high-resilience sponge and silent spring packs, while thick padded linkage armrests enhance comfort to relieve fatigue.  This user-friendly chair allows adjustment of seat height and backrest tilt angle (90°-135°), and comes with a retractable footrest, catering to work, relaxation, or rest needs.